Controlling device for power-driven machines.



W. H. PIKE, JR. CONTROIx-LING DEVICE FOR POWER DRIVEN MACHINES. APPLICATION FILED IBB.3, 1906.

1,050,388. Patented Jan. 14,1913.

p Unw sfrarns PATENT OFFICE.

WILLIAM PIKE, JR., OF SOUTH ORANGE, NEW JERSEY. ASSIGNOB, BY MESNE AS- SIGNMENTS, T0 BURROUGHS ADDING MACHINE- COMPANY, OF DETROIT, MICHIGAN,

A CORPORATION OF MICHIGAN.

CONTROLLING DEVICE FOR POWER-DRIVEN MACHINES.

To (IZZ- 71377107711733 may concern- 1' Be it known that 1, WILLIAM H. PIKE, Jr,, a citizen of the United States, residing at South Orange, in the county of Essex and 5 State of New Jersey, have invented certain new and useful Improvements in Controlling Devices for Power-Driven Machines, of which the following is a specification.

Insome classes of machines, as for instance. in adding machines, it is desirable to limit the speed of movement of the working shaft which operates the working parts of the machine, and which shaft, in turn, is operated from an actuatingshaft-capablei 5 of av greater speed of movement. The object in thus limiting the movement of the working shaft is to prevent a sudden or improper movement of the actuating shaft from driving the working parts too rapidly,

L0 and generally a. dash-pot is used to properly regulate the movements of the working shaft.

This invention relates to the use in connection with an apparatus so controlled, of 5 av continuously rotating driving shaft ca pable of being connected by clutch mechanism withjthe working shaft.- and the invention has for its object to disconnect the machine from the driving shaft at. the end 0 of each rotation and allow the working parts to complete their movements in case the speed of rotation of the driving shaft is in excess of that permitted by the action of the dash-pot.

. 5 A further object is to connect the members of a clutch mechanism by the action of a starting kc and to insure the separation of said members at each complete rotation and until the starting key is again de pressed. I

In the drawing, there is shown in perspective only the parts required to embody the improvement in connection with a shaft herein termed the working shaft-,and which 5 may be. connected in any way to operateany required mechanism.

The particular arrangement of parts shown is specially applicable to the adding n'iaehine illustrated in W. S. Burroughss fore given to the parts of my improved mechanism that correspond to parts of said machine the same designating figures as are used in the said Letters Patent.

Specification of Letters Patent.

Letters Patent No. 504,963, and I have there- Patented Jan. 14, 1913.

Application filed February 3, 1806. Serial No. 299,370.

The working shaft 800 is rocked by retation of the driven member of the clutch through intermediate yielding connections. Thus, the driven shaft A supports the driven member f of av clutch device C, which consists of said member f, the driving member m in the form of a ratchet wheel, a rock shaft 9 carried by the driven member 7 and carrying pawl j, and an arm 7L having a lug e and thrown in. one direction by a spring n. The member m is on a. driving shaft B rotated continuously'from a suit able motor M. The two members at f of the clutch are connected when the pawl j engages the ratchet member m, and may be disconnected by carrying a stop arm k into such posit on that the lug 6 w ll make contact with the arm, thereby rotating the shaft 9 and throwing out the pawl. The stop arm is is lifted by depressing a key p. The rocking of .the shaft 800 in the direction of its arrow is effected from the driven member of the clutch through any suitable yielding means. As shown, it is moved from a rotating crank shaft A, imparting movement to what I term an actuating rock shaft 300.

The latter moves the shaft 800 through the medium of an arm 312, a connecting rod 366 jointed to an arm 110 on a countershaft 100, an arm 811 on-the the shaft 800, and a spring 880 intermediate the arms 811 and 110. An arm 815 on the sha 800 is connected to the bottom of a. d i-pot D, the piston rod of which is connected to a fixed pivot-801 and carries a perforated piston 10.

A blade 119 is pivoted to the arm 110 and is forked at the other end to receive a pin 851 upon the arm 811, and a spring 180 connected to an arm on the shaft 100 tends to carry the said arm in the direction of its arrow.

The movements of the working parts of the machine by the rocking of the shaft 800 are limited by the "speed of movement of the dash pot D (which is partially filled with liquid) in respect to its perforated piston,10.

On starting any action of the machine, the actuating shaft 300 is rocked in the di rection of its arrow. swinging back the arm 110,- drawing on the spring 880, turning the shaft 800 and carrying down the dash pot at-the speed permitted by the dew the liquid through the opening in the piston.

On the return movement when the shaft 300 ro'cks in the reverse direction, the working shaft 'will be rocked in a reversed direction by the action of the fork 119 and the dashpot will be raised at the speed permitted by the flow 'of the liquid through the opening in the piston. It will be evident, how

ever, that if'the shaft 300 starts upon a second reciprocation before the shaft 800 comes to rest, the mechanism would get out .of unison and the parts would be injured of the clutch to begin its rotation is automatically carried back to stop position so as notto be moved therefrom until the shaft 800 has returned to its starting position, and so that the saids'top device cannot be'shifted until the key 12 has returned to normal posit-ion' and is again depressed. While different means maybe employed to secure this referred to.

result. I will describe those which operate efl'ectively with the adding machine before As shown, the driven shaft A connected with the driven member of the clutch carries a crankarm a, the pin 6 of whichenters a slot in a link a connected to an arm (I upon the shaft 300 and an arm v upon the .a spring 8, and

' shaft 7 carrying shaft '11 carries a stud 2 which extends over a shoulder 3 of the link 0- The key 12 operates an arm. 9 from which hangs a blade 'r, the lower section w of which is pivoted to the upper section and retained in line by has a shoulder 4 adapted 5 on a crank arm 6 on the the stop arm is. An arm t on the shaft uis connected by a rod 8 with the blade 1'. ,These parts are so arranged that prior to starting. the shoulder 3 is in contact .with the stud 2. Ondepressing the key, the shaft 7 'is rocked and the stop arm is raised to permit the pawl j to engage the ,member m and start the machine. As soon as the shaft A begins its rotation, the shoulder 3 is removed from the stud 2, and

to engage a pin .the shaft u is rocked in the direc'tion of its .arrow by a spring 18. thrusting forward the rod .9 and carrying the blade 1' out of engagement with the pin 5 so that e arm- 7:: at once falls to stop position when it will contact with the lug e and stopthe ma chine as the driven member f completes its rotation. If the kev' 77 should be released and again depressed before the operations of the machine are completed, it will, have no effect on the stop arm, as the blade 7* can only act on the arm is when the shaft 800 has resumed its starting position and lifted the link 0 to a position to rock back the shaft u'and permit the blade 7" to swing over the pin 5. Further, if after depressing the key 7) and starting the machine, the key is retained down, the parts of the clutch will be disconnected on the completion of a rotation of the driven member of the clutch because the key is automatically disconnected from the stop arm, and the immediately stop arm takes its stop position are engaged after the members of the clutch an can only be set to releasing position after first raising the key. If the key was held down until the link 0 approached its upper p'ositiomthe draft of the rod 8 on the blade 1! would bind the blade against the pin 5 and interfere with the parts taking their proper position. I therefore provide for a yielding connection shown in the form of a pivoted lower section of the blade 1.

While I have shown a clutch device of a special character positive in its action, it will be understood that other forms of clutch devices may be .u'sed as friction clutches, with like eifect in the described combination.

Without limiting myself to the construction shown,I claim 1. The combination with the working shaft, a; motor. and an intermediate clutch of a stop device for arresting the drive] clutch member, means for shift-in the sto device to control connection of the clul'cl members, said stop being automatically re stored to stop position after the driven mem ber begins its rotation. and means for pre venting the action of the shifting means 0 the stop device until the driven member ha been arrested by the stop.

2. The combination with the workin shaft, a motor and an intermediate clutcl of a stop device for arresting the drive clutch member, means for shifting the sto device to control connection of the clutc members. said stop being automatically n stored to stop position after the driven men ber begins its rotation. and means for prventing the action of the shifting means the stop device until the driven member h: been arrested by the stop, and preventing second shifting of the stop: device by tl shifting means until after the latter is r stored to normal position.-

3, The combination with a workingsha: of a motor, a clutch having its driving me! ber connected with the motor and its driv member connected-with the working shaft. rock shaft, a stop carried by said rock sh: for arresting movement of the driven clut member, a starting key, means onerated the key for rocking the rock shaft to mc the stop from engagement with the driv clutch member, and means operative duri the rotation of the driven clutch member arm during each rotation of the driven member.

5. The combination with a working shaft, of a motor, a clutchlhaving its driving mem ber connected withthe motor and its driven member connected with the Working shaft,

spring impelled means for connecting said clutch members-including an arm rotatable with the driven member, astop adapted to engage said arm and hold it in position to disengage the clutch members and' a starting key for shifting the stop from the path of said arm, said stop being automatically restored to the path of said arm before the latter has completed a rotation independent of the returnto normal position of the starting key. I

6. The combination with a working shaft, of a-inotor, a clutch having its driving member connected with the motor and its driven member connected with the working shaft, a stop for arresting movement of the driven clutch membefi-a starting key, means actuated by said key for moving the stop from operative position, a rock shaft connected with the driven clutch member, and connections between said shaft and the key actu-- ated means whereby the latter will be moved out of position to affect the stop as the driven clutch member rotates.

,7. The combination with a working shaft,

of a motor, a clutch having its driving and driven members connected respectively with the motor and working shaft, spring impolled means acting constantly to efi'ectengagement of the clutch members, a stop adapted to render said. means inoperative, manually adjustable means for shifting said stop to permit engagement of the clutch members, said stop being automatically returned to normal position before the driven clutch member has completed a rotation, and means preventing a second shifting of the stop by said manually adjustable means until the rotation of the driven clutch member has been arrested.

8. Thecombination with a working shaft, of a motor, a clutch having its driving and driven members connected respectively with the motor and working shaft, and a detent controlling engagement and disengagement of the members of the clutch and preventing the driven clutch member from making more than one complete rotation during an engagement thereofwith the driving members 9. The combination ofa motor, a ratchet wheel connected thereto for continuous rotation, ',a rotary member having movably mounted thereon a pawl and a controlling arm therefor, a spring tending to engage the pawl with the ratchet wheel, a stop arm normally engaging said pawl arm in opposition to the spring, a key and connections for dis placing said stop arm, means controlled by the said rota ryinember for effecting restoration of the stop arm to position for engag ng the pawl arm as said member completes a cycle of movement, and a working shatt operatively connected to said rotary member. In testimony whereof I afiix my signature in presence of two witnesses.

WILLIAM H. PIKE, JR.

Witnesses ARTHUR PENTECOST, E. C. BA1'VILLE. 

